Operation
status
Description
Current high The drive output current is above the limit set in parameter 4-51 Warning Current High.
Current low The drive output current is below the limit set in parameter 4-52 Warning Speed Low.
DC hold DC hold is selected in parameter 1-80 Function at Stop and a stop command is active. The motor is held by a DC
current set in parameter 2-00 DC Hold Current.
DC stop The motor is held with a DC current (parameter 2-01 DC Brake Current) for a specified time (parameter 2-02 DC Brak-
ing Time).
• DC brake is activated in parameter 2-03 DC Brake Cut In Speed [RPM] and a stop command is active.
• DC brake (inverse) is selected as a function for a digital input (parameter group 5–1* Digital Inputs). The corre-
sponding terminal is not active.
• The DC brake is activated via serial communication.
Feedback
high
The sum of all active feedbacks is above the feedback limit set in parameter 4-57 Warning Feedback High.
Feedback
low
The sum of all active feedbacks is below the feedback limit set in parameter 4-56 Warning Feedback Low.
Freeze out-
put
The remote reference is active, which holds the present speed.
• [20] Freeze Output was selected as a function for a digital input (parameter group 5–1* Digital Inputs). The corre-
sponding terminal is active. Speed control is only possible via the terminal functions speed up and speed down.
• Hold ramp is activated via serial communication.
Freeze out-
put request
A freeze output command has been given, but the motor remains stopped until a run permissive signal is received.
Freeze ref. [19] Freeze Reference was selected as a function for a digital input (parameter group 5–1* Digital Inputs). The corre-
sponding terminal is active. The drive saves the actual reference. Changing the reference is now only possible via
terminal functions speed up and speed down.
Jog request A jog command has been given, but the motor is stopped until a run permissive signal is received via a digital input.
Jogging The motor is running as programmed in parameter 3-19 Jog Speed [RPM].
• [14] Jog was selected as function for a digital input (parameter group 5–1* Digital Inputs). The corresponding ter-
minal (for example, terminal 29) is active.
• The jog function is activated via the serial communication.
• The jog function was selected as a reaction for a monitoring function (for example, No signal). The monitoring
function is active.
Motor check In parameter 1-80 Function at Stop, [2] Motor Check was selected. A stop command is active. To ensure that a motor is
connected to the drive, a permanent test current is applied to the motor.
OVC control Overvoltage control was activated by [2] Enabled in parameter 2-17 Over-voltage Control. The connected motor is
supplying the drive with generative energy. The overvoltage control adjusts the V/Hz ratio to run the motor in con-
trolled mode and to prevent the drive from tripping.
Power unit
off
(For drives with a 24 V external supply installed only.) Mains supply to the drive is removed, but the control card is
supplied by the external 24 V.
Protection
md
Protection mode is active. The unit has detected a critical status (an overcurrent or overvoltage).
• To avoid tripping, the switching frequency is reduced to 1.5 kHz if parameter 14-55 Output Filter is set to [2] Sine-
Wave Filter Fixed. Otherwise, the switching frequency is reduced to 1.0 kHz.
• If possible, protection mode ends after approximately 10 s.
• Protection mode can be restricted in parameter 14-26 Trip Delay at Inverter Fault.
Maintenance, Diagnostics, and
Troubleshooting
Operating Guide | VLT® AQUA Drive FC 202
AQ262141056213en-000101 / 130R0882 | 131
Danfoss A/S © 2018.10
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